Question

express the following speed in km/hr 300 m in 15 second​

Answer 1

Answer:

72 km/hr

Step-by-step explanation:

speed = distance/time

= 300/15 m/s

= 20 m/s

Convert m/s to km/hr

20m/s x 18/5

4 x 18

72 km/hr

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Answer 2

Answer:

1km=1000m

Then 300m=300/1000=0.3km

then 1 hr=60min,

1min=60sec then 60min=60*60=3600sec=1hr

15sec=15/3600

Step-by-step explanation:

=00417hrs

then 0.3km and .00417 hrs